The sum for those numbers is 19.179 NOT 18.729. HOWEVER the Estimation of the sum and the answer for this question is 19.2 because the decimal place you are finding has a number to its right that is greater to that decimal place so you add the one to the decimal place you are finding.
You are given the area of both cupboards.
The total area would be found by adding the two areas together:
3a^2 − 5y + 15 + 4a^2 + 5y + 5
Combine like terms:
3a^2 + 4a^2 = 7a^2
-5y + 5y = 0y
15 +5 = 20
The area of both cupboards would be 7a^2+20
Answer:
-1
Step-by-step explanation:
-2(-x+4) - 1
2x - 8 - 1
2(4) - 8 - 1
8 - 8 - 1
-1
The cost of each duck is $ 7 and cost of each chicken is $ 12.
Step-by-step explanation:
Given,
5 chickens and 3 ducks are bought by $ 81
A chicken costs $ 5 more than a duck.
To find the cost of each duck and cost of each chicken.
Let,
The cost of each duck = x
The cost of each chicken = x+5
According to the problem,
5(x+5)+3x = 81
or, 5x+25+3x = 81
or, 8x = 81-25
or, 8x = 56
or, x = 7
Hence,
The cost of each duck = $ 7
The cost of each chicken = $ 7+5 = $ 12
Answer:
Step-by-step explanation:
A circle is described by an equation in the following form:
(1)
where:
is the x-coordinate of the centre of the circle
is the y-coordinate of the centre of the circle
r is the radius of the circle
For the circle in this problem, we have:
- The centre is located at (2,-8), so
- The radius is 11, so
Therefore substituting into eq(1) we find the equation of this circle:
So the correct option is option B:
